78940880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:412

約数の個数: 80

約数和(自身を含む): 191654400

約数和(自身を除く): 112713520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 139, 155, 229, 248, 278, 310, 458, 496, 556, 620, 695, 916, 1112, 1145, 1240, 1390, 1832, 2224, 2290, 2480, 2780, 3664, 4309, 4580, 5560, 7099, 8618, 9160, 11120, 14198, 17236, 18320, 21545, 28396, 31831, 34472, 35495, 43090, 56792, 63662, 68944, 70990, 86180, 113584, 127324, 141980, 159155, 172360, 254648, 283960, 318310, 344720, 509296, 567920, 636620, 986761, 1273240, 1973522, 2546480, 3947044, 4933805, 7894088, 9867610, 15788176, 19735220, 39470440, 78940880]

約数ペア:

[(1, 78940880), (2, 39470440), (4, 19735220), (5, 15788176), (8, 9867610), (10, 7894088), (16, 4933805), (20, 3947044), (31, 2546480), (40, 1973522), (62, 1273240), (80, 986761), (124, 636620), (139, 567920), (155, 509296), (229, 344720), (248, 318310), (278, 283960), (310, 254648), (458, 172360), (496, 159155), (556, 141980), (620, 127324), (695, 113584), (916, 86180), (1112, 70990), (1145, 68944), (1240, 63662), (1390, 56792), (1832, 43090), (2224, 35495), (2290, 34472), (2480, 31831), (2780, 28396), (3664, 21545), (4309, 18320), (4580, 17236), (5560, 14198), (7099, 11120), (8618, 9160)]